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NASA Technical Reports Server (NTRS) 19730023051: Optimal detumbling of a large manned spacecraft using an internal moving massThe use of a movable mass control system to stabilize an arbitrarily tumbling asymmetric vehicle about the maximum inertia axis is considered. A first-order gradient optimization technique is used to minimize angular velocity components along the intermediate and minimum inertia axes. This method permits a wide range of initial guesses for mass pos